/*

Copyright (C) 2007 Manfred Gschweidl (manfred.gschweidl@students.fhv.at)

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

*/

#ifndef CALLBACK_H_
#define CALLBACK_H_

#include <cstdio>
#include <iostream>
#include <globus_common.h>

namespace globus_common { 

/**
 * A generic callback class for asynchronous communication
 */
class Callback {
	protected:
 		globus_mutex_t mutex;
		globus_cond_t cond;
		globus_bool_t done;
    public:
    	/**
    	 * Constructor
    	 */
		Callback();
		/**
		 * Destructor
		 */
		~Callback();
		/*
		 * Indicates if operation is finished
		 */
		globus_bool_t isDone();
		/**
		 * Mark as finished
		 */
    	virtual void setDone();
    	/**
    	 * Continue operation
    	 */ 
    	virtual void proceed();
    	/**
    	 * Wait for condition
    	 */
		virtual void wait(); 
};

}

#endif /*CALLBACK_H_*/
